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-rw-r--r--cmd/podman/unshare.go49
-rw-r--r--docs/podman-unshare.1.md7
2 files changed, 44 insertions, 12 deletions
diff --git a/cmd/podman/unshare.go b/cmd/podman/unshare.go
index 1db647dba..4a4e371db 100644
--- a/cmd/podman/unshare.go
+++ b/cmd/podman/unshare.go
@@ -3,10 +3,14 @@
package main
import (
+ "fmt"
"os"
"os/exec"
- "github.com/containers/buildah/pkg/unshare"
+ "github.com/containers/libpod/cmd/podman/cliconfig"
+ "github.com/containers/libpod/cmd/podman/libpodruntime"
+ "github.com/containers/libpod/libpod"
+ "github.com/containers/libpod/pkg/rootless"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
@@ -17,38 +21,61 @@ var (
Use: "unshare [flags] [COMMAND [ARG]]",
Short: "Run a command in a modified user namespace",
Long: unshareDescription,
- RunE: unshareCmd,
+ RunE: func(cmd *cobra.Command, args []string) error {
+ unshareCommand.InputArgs = args
+ unshareCommand.GlobalFlags = MainGlobalOpts
+ return unshareCmd(&unshareCommand)
+ },
Example: `podman unshare id
podman unshare cat /proc/self/uid_map,
podman unshare podman-script.sh`,
}
+ unshareCommand cliconfig.PodmanCommand
)
func init() {
- _unshareCommand.SetUsageTemplate(UsageTemplate())
+ unshareCommand.Command = _unshareCommand
+ unshareCommand.SetHelpTemplate(HelpTemplate())
+ unshareCommand.SetUsageTemplate(UsageTemplate())
flags := _unshareCommand.Flags()
flags.SetInterspersed(false)
}
+func unshareEnv(config *libpod.RuntimeConfig) []string {
+ return append(os.Environ(), "_CONTAINERS_USERNS_CONFIGURED=done",
+ fmt.Sprintf("CONTAINERS_GRAPHROOT=%s", config.StorageConfig.GraphRoot),
+ fmt.Sprintf("CONTAINERS_RUNROOT=%s", config.StorageConfig.RunRoot))
+}
+
// unshareCmd execs whatever using the ID mappings that we want to use for ourselves
-func unshareCmd(c *cobra.Command, args []string) error {
- if isRootless := unshare.IsRootless(); !isRootless {
+func unshareCmd(c *cliconfig.PodmanCommand) error {
+
+ if isRootless := rootless.IsRootless(); !isRootless {
return errors.Errorf("please use unshare with rootless")
}
// exec the specified command, if there is one
- if len(args) < 1 {
+ if len(c.InputArgs) < 1 {
// try to exec the shell, if one's set
shell, shellSet := os.LookupEnv("SHELL")
if !shellSet {
return errors.Errorf("no command specified and no $SHELL specified")
}
- args = []string{shell}
+ c.InputArgs = []string{shell}
}
- cmd := exec.Command(args[0], args[1:]...)
- cmd.Env = unshare.RootlessEnv()
+
+ runtime, err := libpodruntime.GetRuntime(getContext(), c)
+ if err != nil {
+ return err
+ }
+ runtimeConfig, err := runtime.GetConfig()
+ if err != nil {
+ return err
+ }
+
+ cmd := exec.Command(c.InputArgs[0], c.InputArgs[1:]...)
+ cmd.Env = unshareEnv(runtimeConfig)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
- unshare.ExecRunnable(cmd)
- return nil
+ return cmd.Run()
}
diff --git a/docs/podman-unshare.1.md b/docs/podman-unshare.1.md
index a7f018ce1..a10fb40f9 100644
--- a/docs/podman-unshare.1.md
+++ b/docs/podman-unshare.1.md
@@ -19,6 +19,11 @@ manually clearing storage and other data related to images and containers.
It is also useful if you want to use the `podman mount` command. If an unprivileged users wants to mount and work with a container, then they need to execute
podman unshare. Executing `podman mount` fails for unprivileged users unless the user is running inside a `podman unshare` session.
+The unshare session defines two environment variables:
+
+**CONTAINERS_GRAPHROOT** the path to the persistent containers data.
+**CONTAINERS_RUNROOT** the path to the volatile containers data.
+
## EXAMPLE
```
@@ -34,4 +39,4 @@ $ podman unshare cat /proc/self/uid_map /proc/self/gid_map
## SEE ALSO
-podman(1), podman-mount(1), namespaces(7), newuidmap(1), newgidmap(1), user\_namespaces(7) \ No newline at end of file
+podman(1), podman-mount(1), namespaces(7), newuidmap(1), newgidmap(1), user\_namespaces(7)